/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { ts, rule } from "qvog-dsl";

const SEVERITY = 2;
const DOC_PATH = 'docs/no-function-in-loop.md';
const DESCRIPTION = 'Declaring functions inside loops can lead to performance issues and unexpected behavior. Define functions outside loops instead.';

export default rule()
  .match(ts.isFunctionDeclaration)
  .when(node => {
      // 遍历父节点，检查是否在循环中
      let parent = node.parent;
      while (parent) {
          if (
              ts.isForStatement(parent) ||
              ts.isForOfStatement(parent) ||
              ts.isForInStatement(parent) ||
              ts.isWhileStatement(parent) ||
              ts.isDoStatement(parent)
          ) {
              return true;
          }
          parent = parent.parent;
      }
      return false;
  })
  .report({
      severity: SEVERITY,
      description: DESCRIPTION,
      docPath: DOC_PATH,
  });
